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Merge pull request #1074 from lioncash/bool

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dyncom: Minor changes to CondPassed
This commit is contained in:
bunnei 2015-08-26 18:44:52 -04:00
commit 32e279c0ca
1 changed files with 38 additions and 56 deletions
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94
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -49,65 +49,47 @@ enum {
typedef unsigned int (*shtop_fp_t)(ARMul_State* cpu, unsigned int sht_oper);
static int CondPassed(ARMul_State* cpu, unsigned int cond) {
const u32 NFLAG = cpu->NFlag;
const u32 ZFLAG = cpu->ZFlag;
const u32 CFLAG = cpu->CFlag;
const u32 VFLAG = cpu->VFlag;
int temp = 0;
static bool CondPassed(ARMul_State* cpu, unsigned int cond) {
const bool n_flag = cpu->NFlag != 0;
const bool z_flag = cpu->ZFlag != 0;
const bool c_flag = cpu->CFlag != 0;
const bool v_flag = cpu->VFlag != 0;
switch (cond) {
case 0x0:
temp = ZFLAG;
break;
case 0x1: // NE
temp = !ZFLAG;
break;
case 0x2: // CS
temp = CFLAG;
break;
case 0x3: // CC
temp = !CFLAG;
break;
case 0x4: // MI
temp = NFLAG;
break;
case 0x5: // PL
temp = !NFLAG;
break;
case 0x6: // VS
temp = VFLAG;
break;
case 0x7: // VC
temp = !VFLAG;
break;
case 0x8: // HI
temp = (CFLAG && !ZFLAG);
break;
case 0x9: // LS
temp = (!CFLAG || ZFLAG);
break;
case 0xa: // GE
temp = ((!NFLAG && !VFLAG) || (NFLAG && VFLAG));
break;
case 0xb: // LT
temp = ((NFLAG && !VFLAG) || (!NFLAG && VFLAG));
break;
case 0xc: // GT
temp = ((!NFLAG && !VFLAG && !ZFLAG) || (NFLAG && VFLAG && !ZFLAG));
break;
case 0xd: // LE
temp = ((NFLAG && !VFLAG) || (!NFLAG && VFLAG)) || ZFLAG;
break;
case 0xe: // AL
temp = 1;
break;
case 0xf:
temp = 1;
break;
case ConditionCode::EQ:
return z_flag;
case ConditionCode::NE:
return !z_flag;
case ConditionCode::CS:
return c_flag;
case ConditionCode::CC:
return !c_flag;
case ConditionCode::MI:
return n_flag;
case ConditionCode::PL:
return !n_flag;
case ConditionCode::VS:
return v_flag;
case ConditionCode::VC:
return !v_flag;
case ConditionCode::HI:
return (c_flag && !z_flag);
case ConditionCode::LS:
return (!c_flag || z_flag);
case ConditionCode::GE:
return (n_flag == v_flag);
case ConditionCode::LT:
return (n_flag != v_flag);
case ConditionCode::GT:
return (!z_flag && (n_flag == v_flag));
case ConditionCode::LE:
return (z_flag || (n_flag != v_flag));
case ConditionCode::AL:
case ConditionCode::NV: // Unconditional
return true;
}
return temp;
return false;
}
static unsigned int DPO(Immediate)(ARMul_State* cpu, unsigned int sht_oper) {